公开(公告)号：US20180209869A1

公开(公告)日：2018-07-26

申请号：US15916773

申请日：2018-03-09

申请人： KUBOTA CORPORATION

发明人： Shozo KISHI ,  Keita ODA

IPC分类号： G01M5/00 ,  G01L5/00 ,  F16L1/036

CPC分类号： G01M5/0041 ,  F16L1/036 ,  G01L5/00 ,  G01M5/0025

摘要： A behavior estimation method includes a first step of calculating number of earthquake resistant joints required for absorbing a fault displacement amount in a pipe orthogonal direction, based on an allowable deflection angle and a pipe effective length, and calculating a deflection range in a pipe axis direction, a second step of calculating a load, received by the pipe due to relative displacement between the pipe and ground corresponding to a ground spring model in the pipe orthogonal direction defined with spring constants respectively for relative displacements smaller and larger than a predetermined relative displacement, a third step of calculating a bending moment distribution of joint positions from a bending moment of a trapezoidal distribution load, and obtaining a pipe deflection angle at each of the joint positions based on a predetermined joint deflection spring model, and a deflection performance evaluation step.

公开(公告)号：US20230091354A1

公开(公告)日：2023-03-23

申请号：US17769372

申请日：2020-10-05

申请人： KUBOTA CORPORATION

发明人： Shozo KISHI ,  Keita ODA ,  Ryunosuke TANAKA

IPC分类号： F16L21/08 ,  F16L21/04 ,  F16L57/02

摘要： In a pipe joint, a spigot is inserted into a socket; a lock ring is accommodated in a lock ring-accommodating groove formed in the inner circumference of the socket; and an engaging part formed in the outer circumference of the spigot, wherein the engaging part engages with the lock ring from a back side of the socket in a separation direction A of the spigot, thereby preventing the spigot from separating from the socket. The engaging part is formed at a position receding from a distal end of the spigot in the separation direction A of the spigot. A bending suppressing member for restricting the socket and the spigot in a bending direction C is provided between the inner circumference of the socket and the outer circumference of the spigot in the range between the distal end of the spigot and the engaging part.

公开(公告)号：US20210312105A1

公开(公告)日：2021-10-07

申请号：US17224219

申请日：2021-04-07

申请人： KUBOTA CORPORATION

发明人： Shozo KISHI ,  Yuito KOMARU ,  Kazuma HARADA ,  Akira YAMASHITA

IPC分类号： G06F30/18 ,  G06F30/13 ,  G06F30/20 ,  G06Q50/08

摘要： A construction management document creation device includes: a first input processing unit configured to repeat a process of assigning a unique pipe number and a unique joint number in association with pipe attribute information, and thereby generate pipe connection information from which connection relationship between laying pipes is identifiable based on the pipe number and the joint number, and pipe laying information from which a type and a laying position of each laying pipe are identifiable based on the pipe attribute information; a second input processing unit configured to generate assembled condition management information based on assembling procedure confirmation information and assembled condition evaluation information input for each pipe assembling section identified by the joint number; and a document generation processing unit configured to generate a construction management document including a daily construction report based on the pipe connection information, the pipe laying information, and the assembled condition management information.

公开(公告)号：US20230139386A1

公开(公告)日：2023-05-04

申请号：US17911865

申请日：2021-03-15

申请人： KUBOTA CORPORATION

发明人： Yuito KOMARU ,  Shozo KISHI ,  Masataka SHIMOMURA ,  Daichi HIGASA ,  Kohei IKEDA

IPC分类号： G01M3/28

摘要： A watertightness testing method for testing watertightness of a joined section (4) where one end section of a second pipe (3) is joined to a first pipe (2), the watertightness testing method including: inserting a testing device body (21) into the first pipe (2); attaching an assembling device (80) to another end section of the second pipe (3); attaching a pulling device (82a) to the assembling device (80) and connecting the pulling device (82a) to a strap-shaped member (112a) having been wound in advance around an outer circumference of the first pipe (2); operating the pulling device (82a) and pulling the strap-shaped member (112a) in a separating direction of the second pipe (3) to have a reaction force generated in the second pipe (3) cause the second pipe (3) to be pulled in a joining direction (G), the one end section of the second pipe (3) to be inserted into the first pipe (2), and the second pipe (3) to be joined to the first pipe (2); and operating a moving operation rod (22) provided in the testing device body (21) from outside of the other end section of the second pipe (3) in a state where the second pipe (3) is being pulled in the joining direction (G) to move the testing device body (21) to the joined section (4).

公开(公告)号：US20220196509A1

公开(公告)日：2022-06-23

申请号：US17441719

申请日：2020-03-24

申请人： KUBOTA CORPORATION

发明人： Shozo KISHI ,  Yuito KOMARU ,  Koji KAMACHI ,  Masataka SHIMOMURA

IPC分类号： G01M3/04 ,  F16J15/10

摘要： A watertight testing device includes a cylindrical core fit into a pipe joint part, a first seal member for sealing between the outer surface of the core and the inner surface of one pipe, a second seal member for sealing between the outer surface of the core and the inner surface of the other pipe, a first pressing member for pressing and compressing the first seal member into a first seal-member insertion space, a second pressing member for pressing and compressing the second seal member into a second seal-member insertion space, a moving device for moving the first and second pressing members in a pipe axial direction, and a test fluid feeder for feeding a test fluid into a test space.

公开(公告)号：US20150292656A1

公开(公告)日：2015-10-15

申请号：US14408591

申请日：2013-06-11

申请人： KUBOTA CORPORATION

发明人： Shozo KISHI ,  Takaaki KAGAWA ,  Keita ODA ,  Kazuya ITO

IPC分类号： F16L21/03 ,  F16J15/02 ,  F16L21/04 ,  F16K27/00

CPC分类号： F16L21/03 ,  F16J15/022 ,  F16J15/028 ,  F16K3/30 ,  F16K27/00 ,  F16L21/04 ,  F16L21/08 ,  F16L23/024 ,  F16L23/032 ,  F16L23/162 ,  F16L23/22 ,  F16L37/0845

摘要： A first projection is formed on the outer periphery of a bulb part, a second projection is formed on the socket rear end of the bulb part, a tapered part is formed with a decreasing diameter from the inner periphery of a heel part to the inner periphery of the second projection, and a third projection is formed on the tapered part. A first dimension B from the first projection to the third projection in an inclination direction opposite to an inclination direction G of the tapered part is smaller than a second dimension C from the first projection to the second projection in a radial direction A.

摘要翻译： 第一突起形成在灯泡部分的外周上，第二突起形成在灯泡部分的插座后端上，锥形部分形成为从后跟部分的内周到内周的直径减小 并且在锥形部分上形成第三突起。 从第一突起到第三突起的倾斜方向与锥形部的倾斜方向G相反的第一尺寸B小于从第一突起到第二突起的径向A的第二尺寸C.

公开(公告)号：US20220244043A1

公开(公告)日：2022-08-04

申请号：US17619364

申请日：2020-06-19

申请人： Kubota Corporation

发明人： Shozo KISHI ,  Akira YAMASHITA ,  Kazuma HARADA ,  Tamon IDEN

IPC分类号： G01B11/26 ,  G06T7/00 ,  G06T7/557 ,  G06T7/564 ,  G06T7/62 ,  G06T7/70 ,  G06V10/44 ,  G06V20/64

摘要： Provided is a bending angle calculation method capable of saving a worker time and effort. The bending angle calculation method includes: an image capturing step (S1) of capturing an image of a pipe in which a first pipe and a second pipe are joined together by a joint; a derivation step (S3) of deriving, from the image, a laying direction straight line corresponding to a laying direction of the pipe; and a calculation step (S4) of calculating, as a bending angle at the joint, a crossing angle between a laying direction straight line of the first pipe and a laying direction straight line of the second pipe.

公开(公告)号：US20200208765A1

公开(公告)日：2020-07-02

申请号：US16722434

申请日：2019-12-20

申请人： KUBOTA CORPORATION

发明人： Shozo KISHI ,  Keita ODA ,  Ryunosuke TANAKA ,  Hideki NAKAYA

IPC分类号： F16L25/08 ,  F16L25/06

摘要： A pipe-joining centering device aligns, with an axial center of one pipe, an axial center of another pipe when a spigot of the other pipe is to be inserted into a socket of the one pipe. The pipe-joining centering device includes a support member configured to support an end part of the spigot. The support member is tiltable in a pipe radial direction between an inner peripheral surface of the socket and an outer peripheral surface of the spigot. The pipe-joining centering device also includes a position adjustment member configured to tilt the support member in the pipe radial direction. The support member and the position adjustment member are supported on the inner peripheral surface of the socket.

公开(公告)号：US20150362103A1

公开(公告)日：2015-12-17

申请号：US14564233

申请日：2014-12-09

申请人： KUBOTA CORPORATION

发明人： Shozo KISHI ,  Shogo KANEKO ,  Keita ODA

IPC分类号： F16L21/00 ,  G06F17/50

CPC分类号： G06F17/50 ,  F16L21/04 ,  F16L27/1017 ,  F16L37/088 ,  G06F2217/34

摘要： There are provided a pipeline structure and a computer readable recording medium having recorded thereon a program that supports the design of the pipeline structure. The pipeline structure includes two collars and a plurality of short pipes. The plurality of short pipes are connected by joint structures. Two collars are arranged to sandwich a zone where a fault displacement is expected to occur, and thereby, a ground displacement in the pipe axis direction is dealt with (absorbed). The plurality of short pipes are connected by the larger number of joints than the number of joints in the case of arranging a long pipe. By increasing the number of joints, it becomes easier to deal with (absorb) a ground displacement in the direction perpendicular to a pipe axis.

摘要翻译： 提供了一种流水线结构和其上记录有支持流水线结构设计的程序的计算机可读记录介质。 管道结构包括两个套环和多个短管。 多个短管通过接头结构连接。 布置两个套环以夹住发生故障位移的区域，从而处理（吸收）管轴方向上的地面位移。 在布置长管的情况下，多个短管通过接头数量大于接头数量而连接。 通过增加接头的数量，在垂直于管轴的方向处理（吸收）地面位移变得更容易。

公开(公告)号：US20220178471A1

公开(公告)日：2022-06-09

申请号：US17441320

申请日：2020-03-19

申请人： KUBOTA CORPORATION

发明人： Shozo KISHI ,  Kazuya ITO ,  Yuito KOMARU ,  Ko ISHIMURA ,  Masataka SHIMOMURA ,  Yutaka FUJIMOTO ,  Kento HIGASHI

IPC分类号： F16L1/09 ,  F16L1/036

摘要： A pipe joining method includes a moving of a first transport trolley with a loaded first pipe and a second transport trolley with a loaded second pipe forward, a joining of one end of the first pipe to another end of a rearmost pipe of a pipeline, a lifting of another end of the first pipe, a moving of the first transport trolley and the second transport trolley backward, a drawing of the first transport trolley from beneath of the first pipe to the near side, a removing of a coupler to separate the first transport trolley and the second transport trolley, a moving of the first transport trolley backward, a drawing of the first transport trolley below the second pipe loaded on the second transport trolley, and a moving of the second transport trolley forward with the first transport trolley.